@article{AIHP_1932__2_4_369_0,
     author = {Birkhoff, George D.},
     title = {Sur l'existence de r\'egions d'instabilit\'e en {Dynamique}},
     journal = {Annales de l'institut Henri Poincar\'e},
     pages = {369--386},
     publisher = {INSTITUT HENRI POINCAR\'E ET LES PRESSES UNIVERSITAIRES DE FRANCE},
     volume = {2},
     number = {4},
     year = {1932},
     zbl = {0005.22103},
     language = {fr},
     url = {http://archive.numdam.org/item/AIHP_1932__2_4_369_0/}
}